NFT bases firewall for 'servers'
- Debian 10.x, 11.x, possibly 9.x
- Ubuntu 20.x (todo)
- RedHat/CentOS 7.x, 8,x (todo)
- Install nft
- Optionally disable iptables / firewalld / ufw / whatever other firewall
- Configure nft to run at boot
- Trigger nft reload ( uncomment notify / add handler )
trusted: list of machines / subnets to allow ssh traffic from
openports: tcp ports to open up to the public
nft_defines: list of custom groups and their subnets, to be used in custom rules
wireguard_port: if defined, open this udp port
nft_allow_http: if true, open ports http+https to the world
Default chain policies:
nft_policy_input: "drop"
nft_policy_forward: "accept"
nft_policy_output: "accept"
nft_policy_prerouting: "accept"
nft_policy_postrouting: "accept"
On a per (ansible) host and group basis, custom rules can be defined
group_nft_input: [] group_nft_forward: [] group_nft_output: []
host_nft_input: [] host_nft_forward: [] host_nft_output: []
group_nft_postrouting: [] host_nft_postrouting: [] group_nft_prerouting: [] host_nft_prerouting: []